细菌性痢疾的肠道病变及脓血便主要是什么引起的（） A.痢疾杆菌侵入肠黏膜固有层，因其

光合作用的实质是[ ]

A．分解有机物，释放氧气，把光能转变成贮存在有机物中的能量

B．合成有机物，释放氧气，把光能转变成贮存在有机物中的能量

C．合成有机物，释放二氧化碳，释放能量

D．分解有机物，释放二氧化碳，释放能量

背景材料：

某砖砌体结构多层住宅，工地处于主体施工阶段，现场设两台门吊，扣件式钢管双排外架，混凝土现场搅拌。

根据本项目情况，标准员编制了执行工程建设标准强制性条文落实计划表，见表1

请根据上述背景资料完成以下选项，选项类型根据各小题注明要求。

（单选题）房屋建筑工程施工现场安全生产的检查评定，主要依据的标准是（）。

A.《建筑施工安全检查标准》（JGJ59—2011）

B《建筑施工企业安全评价标准》（JGJ／T77--2010）

C.《施工企业安全生产管理规范》（GB50656--2011）

D.《建筑工程施工质量验收统一标准》（GB50300--2001）

时间动作研究被称为是科学工作分析的开始，其创始人是（）。

"It’s no use, Mum," said Johnny. "I’m just no good at dancing."

"You’ve got to keep trying. Tonight will be (1) , dear. Try a turn with that pretty Lisette. "

Johnny (2) . Every Saturday night used to be the best of the week. He and his parents went to the (3) at the Club, where his hero, Alcide, played the accordion with the band. But lately everything had changed. Now that Johnny was older, he was (4) to dance with a girl!

(5) Johnny and his parents arrived at the Club, music had already started. Johnny got up his (6) to approach Lisette. "May I have this dance" Johnny asked. "That’s all right."said Lisette. Johnny struggled to keep up with Lisette’s (7) steps, but he was always one beat behind her. Then Johnny heard his friend Pierre say, "Look! Johnny has two left feet!" (8) burst from the crowd. Johnny (9) and ran outside, determined never to go to another dance.

The next Saturday, Alcide (10) to Johnny’s house for some potatoes. He happened to hear Johnny playing the accordion. Alcide’s eyes (11) . "Bring that accordion and play some songs tonight," Alcide said. Then he drove off, leaving Johnny staring open mouthed (12) him.

At the Club, Johnny scanned the crowd for Lisette and (13) her. The band played for a long time before Alcide said, "Dear friends, I got a (14) for you tonight. Young Johnny is going to join us!" (15) , Johnny stepped up on the platform, his eyes on the floor. He began to play, and the band (16) behind him. When the song ended, he heard cheers. Johnny kept playing until the dance was (17) . "You did a fine job tonight. Play with us again next Saturday night, " Alcide said. "Yes, sir! " said Johnny. (18) he went outside, Johnny saw Lisette and her friends near the door. Lisette stepped (19) , smiling. "You played really good tonight!" she said."Thank you," Johnny blushed. As he walked on, Pierre (20) moved out of the way for him to pass.Johnny patted his accordion. Come to think of it, in his whole life, he had never once seen Alcide out on the dance floor.

13().

A．caught

B．searched

C．sought

D．spotted

县辖联行往来采取（）的办法规定操作。

A、直接往来

B、按月对帐

C、日对月清

D、联社监督结清